Fix create article action and add security level to articles controller
Fix create article action and add security level to articles controller

- Always when create an articles the first user in the database was the author of the article, and now the author will be the current user that is creating the article.

- Add a security level for all the articles routes except index and show. When a user is not logged in, they can't access to the other articles routes, only index and show.
juanhenriquez/blog-app,juanhenriquez/blog-app,juanhenriquez/blog-app